skip to main content
DOE PAGES title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Spin dynamics near a putative antiferromagnetic quantum critical point in Cu-substituted BaFe 2 As 2 and its relation to high-temperature superconductivity

Abstract

We present the results of elastic and inelastic neutron scattering measurements on nonsuperconducting Ba(Fe0.957Cu0.043)2As2, a composition close to a quantum critical point between antiferromagnetic (AFM) ordered and paramagnetic phases. By comparing these results with the spin fluctuations in the low-Cu composition as well as the parent compound BaFe2As2 and superconducting Ba(Fe1–xNix)2As2 compounds, we demonstrate that paramagnon-like spin fluctuations are evident in the antiferromagnetically ordered state of Ba(Fe0.957Cu0.043)2As2, which is distinct from the AFM-like spin fluctuations in the superconducting compounds. Our observations suggest that Cu substitution decouples the interaction between quasiparticles and the spin fluctuations. In addition, we show that the spin-spin correlation length ξ(T) increases rapidly as the temperature is lowered and find ω/T scaling behavior, the hallmark of quantum criticality, at an antiferromagnetic quantum critical point.

Authors:
 [1];  [2];  [3];  [4];  [5];  [5];  [5];  [5];  [5];  [6];  [3];  [3];  [1];  [3];  [7];  [3];  [3];  [8]
  1. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Materials Sciences Division
  2. Univ. of California, Berkeley, CA (United States). Dept. of Physics
  3. Iowa State Univ., Ames, IA (United States). Dept. of Physics and Astronomy; Ames Lab., Ames, IA (United States)
  4. Univ. of California, Berkeley, CA (United States). Dept. of Materials Science and Engineering
  5. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Quantum Condensed Matter Division
  6. Univ. of Missouri, Columbia, MO (United States). The Missouri Research Reactor
  7. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Materials Sciences Division; Univ. of California, Berkeley, CA (United States). Dept. of Physics
  8. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Materials Sciences Division; Univ. of California, Berkeley, CA (United States). Dept. of Physics and Dept. of Materials Science and Engineering
Publication Date:
Research Org.:
Ames Laboratory (AMES), Ames, IA (United States); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Materials Sciences & Engineering Division
OSTI Identifier:
1234514
Alternate Identifier(s):
OSTI ID: 1227748; OSTI ID: 1311256; OSTI ID: 1454443
Report Number(s):
IS-J-8817
Journal ID: ISSN 1098-0121; PRBMDO
Grant/Contract Number:  
AC05-00OR22725; AC02-05CH11231; AC02-07CH11358
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review. B, Condensed Matter and Materials Physics
Additional Journal Information:
Journal Volume: 92; Journal Issue: 21; Journal ID: ISSN 1098-0121
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY

Citation Formats

Kim, M. G., Wang, M., Tucker, G. S., Valdivia, P. N., Abernathy, D. L., Chi, Songxue, Christianson, A. D., Aczel, A. A., Hong, T., Heitmann, T. W., Ran, S., Canfield, P. C., Bourret-Courchesne, E. D., Kreyssig, A., Lee, D. H., Goldman, A. I., McQueeney, R. J., and Birgeneau, R. J. Spin dynamics near a putative antiferromagnetic quantum critical point in Cu-substituted BaFe2As2 and its relation to high-temperature superconductivity. United States: N. p., 2015. Web. doi:10.1103/PhysRevB.92.214404.
Kim, M. G., Wang, M., Tucker, G. S., Valdivia, P. N., Abernathy, D. L., Chi, Songxue, Christianson, A. D., Aczel, A. A., Hong, T., Heitmann, T. W., Ran, S., Canfield, P. C., Bourret-Courchesne, E. D., Kreyssig, A., Lee, D. H., Goldman, A. I., McQueeney, R. J., & Birgeneau, R. J. Spin dynamics near a putative antiferromagnetic quantum critical point in Cu-substituted BaFe2As2 and its relation to high-temperature superconductivity. United States. doi:10.1103/PhysRevB.92.214404.
Kim, M. G., Wang, M., Tucker, G. S., Valdivia, P. N., Abernathy, D. L., Chi, Songxue, Christianson, A. D., Aczel, A. A., Hong, T., Heitmann, T. W., Ran, S., Canfield, P. C., Bourret-Courchesne, E. D., Kreyssig, A., Lee, D. H., Goldman, A. I., McQueeney, R. J., and Birgeneau, R. J. Wed . "Spin dynamics near a putative antiferromagnetic quantum critical point in Cu-substituted BaFe2As2 and its relation to high-temperature superconductivity". United States. doi:10.1103/PhysRevB.92.214404. https://www.osti.gov/servlets/purl/1234514.
@article{osti_1234514,
title = {Spin dynamics near a putative antiferromagnetic quantum critical point in Cu-substituted BaFe2As2 and its relation to high-temperature superconductivity},
author = {Kim, M. G. and Wang, M. and Tucker, G. S. and Valdivia, P. N. and Abernathy, D. L. and Chi, Songxue and Christianson, A. D. and Aczel, A. A. and Hong, T. and Heitmann, T. W. and Ran, S. and Canfield, P. C. and Bourret-Courchesne, E. D. and Kreyssig, A. and Lee, D. H. and Goldman, A. I. and McQueeney, R. J. and Birgeneau, R. J.},
abstractNote = {We present the results of elastic and inelastic neutron scattering measurements on nonsuperconducting Ba(Fe0.957Cu0.043)2As2, a composition close to a quantum critical point between antiferromagnetic (AFM) ordered and paramagnetic phases. By comparing these results with the spin fluctuations in the low-Cu composition as well as the parent compound BaFe2As2 and superconducting Ba(Fe1–xNix)2As2 compounds, we demonstrate that paramagnon-like spin fluctuations are evident in the antiferromagnetically ordered state of Ba(Fe0.957Cu0.043)2As2, which is distinct from the AFM-like spin fluctuations in the superconducting compounds. Our observations suggest that Cu substitution decouples the interaction between quasiparticles and the spin fluctuations. In addition, we show that the spin-spin correlation length ξ(T) increases rapidly as the temperature is lowered and find ω/T scaling behavior, the hallmark of quantum criticality, at an antiferromagnetic quantum critical point.},
doi = {10.1103/PhysRevB.92.214404},
journal = {Physical Review. B, Condensed Matter and Materials Physics},
number = 21,
volume = 92,
place = {United States},
year = {2015},
month = {12}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record

Citation Metrics:
Cited by: 3 works
Citation information provided by
Web of Science

Save / Share:

Works referenced in this record:

Quantum critical phenomena
journal, August 1976


Neutron scattering study of the interplay between structure and magnetism in Ba ( Fe 1 x Co x ) 2 As 2
journal, April 2009


Is LaFeAsO 1 x F x an Electron-Phonon Superconductor?
journal, July 2008


Itinerant Magnetic Excitations in Antiferromagnetic CaFe 2 As 2
journal, May 2009


Magnetic excitations in pure, lightly doped, and weakly metallic La 2 CuO 4
journal, December 1992


Nematic spin correlations in the tetragonal state of uniaxial-strained BaFe2-xNixAs2
journal, July 2014


Evolution from non-Fermi- to Fermi-liquid transport via isovalent doping in BaFe 2 ( As 1 x P x ) 2 superconductors
journal, May 2010


Spin waves and magnetic exchange interactions in CaFe2As2
journal, July 2009

  • Zhao, Jun; Adroja, D. T.; Yao, Dao-Xin
  • Nature Physics, Vol. 5, Issue 8
  • DOI: 10.1038/nphys1336

Dispersive spin fluctuations in the nearly optimally doped superconductor Ba ( Fe 1 x Co x ) 2 As 2 ( x = 0.065 )
journal, February 2010


Anomalous Properties around Magnetic Instability in Heavy Electron Systems
journal, March 1995

  • Moriya, Tôru; Takimoto, Tetsuya
  • Journal of the Physical Society of Japan, Vol. 64, Issue 3
  • DOI: 10.1143/JPSJ.64.960

Low Energy Spin Waves and Magnetic Interactions in SrFe 2 As 2
journal, October 2008


Nature of magnetic excitations in superconducting BaFe1.9Ni0.1As2
journal, March 2012

  • Liu, Mengshu; Harriger, Leland W.; Luo, Huiqian
  • Nature Physics, Vol. 8, Issue 5
  • DOI: 10.1038/nphys2268

Superconductivity without phonons
journal, December 2007

  • Monthoux, P.; Pines, D.; Lonzarich, G. G.
  • Nature, Vol. 450, Issue 7173
  • DOI: 10.1038/nature06480

Decoupling of the superconducting and magnetic/structural phase transitions in electron-doped BaFe 2 As 2
journal, August 2009


Short-range cluster spin glass near optimal superconductivity in Ba Fe 2 x Ni x As 2
journal, July 2014


Two-dimensional resonant magnetic excitation in BaFe 1.84 Co 0.16 As 2
journal, March 2009


Quantum fluctuations of a nearly critical Heisenberg spin glass
journal, March 2001


Phase diagram of iron pnictides if doping acts as a source of disorder
journal, December 2011


Structural and Magnetic Phase Transitions near Optimal Superconductivity in BaFe 2 ( As 1 x P x ) 2
journal, April 2015


High-energy spin excitations in BaFe 2 As 2 observed by inelastic neutron scattering
journal, December 2008


Quantum field theory of metallic spin glasses
journal, October 1995


Anisotropic itinerant magnetism and spin fluctuations in BaFe 2 As 2 : A neutron scattering study
journal, February 2009


Crossover from spin waves to diffusive spin excitations in underdoped Ba ( Fe 1 x Co x ) 2 As 2
journal, May 2014


Normal-state spin dynamics and temperature-dependent spin-resonance energy in optimally doped BaFe1.85Co0.15As2
journal, December 2009

  • Inosov, D. S.; Park, J. T.; Bourges, P.
  • Nature Physics, Vol. 6, Issue 3
  • DOI: 10.1038/nphys1483

Antiferromagnetic order and spin dynamics in iron-based superconductors
journal, August 2015


Suppression of antiferromagnetic order and orthorhombic distortion in superconducting Ba ( Fe 0.961 Rh 0.039 ) 2 As 2
journal, April 2010


Avoided Quantum Criticality and Magnetoelastic Coupling in BaFe 2 x Ni x As 2
journal, June 2013


A Sharp Peak of the Zero-Temperature Penetration Depth at Optimal Composition in BaFe2(As1-xPx)2
journal, June 2012


Itinerant spin excitations in SrFe 2 As 2 measured by inelastic neutron scattering
journal, June 2011


Temperature dependence of the paramagnetic spin excitations in BaFe 2 As 2
journal, October 2012


Anisotropic Three-Dimensional Magnetism in CaFe 2 As 2
journal, November 2008


Scaling of Magnetic Fluctuations near a Quantum Phase Transition
journal, June 1998


Enhancement of T c by disorder in underdoped iron pnictide superconductors
journal, April 2012


Quantum critical response function in quasi-two-dimensional itinerant antiferromagnets
journal, October 2015


Non-Fermi-liquid behavior near a T =0 spin-glass transition
journal, October 1995


Fermi-liquid instabilities at magnetic quantum phase transitions
journal, August 2007

  • Löhneysen, Hilbert v.; Rosch, Achim; Vojta, Matthias
  • Reviews of Modern Physics, Vol. 79, Issue 3
  • DOI: 10.1103/RevModPhys.79.1015

Dynamic Spin Properties of La 1.98 Sr 0.02 CuO 4
journal, May 1993

  • Matsuda, Masaaki; Birgeneau, R. J.; Endoh, Yasuo
  • Journal of the Physical Society of Japan, Vol. 62, Issue 5
  • DOI: 10.1143/JPSJ.62.1702

Iron-based superconductors: Current status of materials and pairing mechanism
journal, July 2015


Design and operation of the wide angular-range chopper spectrometer ARCS at the Spallation Neutron Source
journal, January 2012

  • Abernathy, D. L.; Stone, M. B.; Loguillo, M. J.
  • Review of Scientific Instruments, Vol. 83, Issue 1
  • DOI: 10.1063/1.3680104

Phenomenology of the normal state of Cu-O high-temperature superconductors
journal, October 1989


Kondo disorder: a possible route towards non-Fermi-liquid behaviour
journal, November 1996

  • Miranda, E.; Dobrosavljevic, V.; Kotliar, G.
  • Journal of Physics: Condensed Matter, Vol. 8, Issue 48
  • DOI: 10.1088/0953-8984/8/48/014

FeAs-Based Superconductivity: A Case Study of the Effects of Transition Metal Doping on BaFe 2 As 2
journal, August 2010


Unconventional pairing in the iron arsenide superconductors
journal, April 2010


Non-Fermi-Liquid Scaling of the Magnetic Response in UCu 5 x Pd x ( x = 1 , 1.5 )
journal, July 1995


Disorder, inhomogeneity and spin dynamics in f-electron non-Fermi liquid systems
journal, September 2004

  • MacLaughlin, D. E.; Heffner, R. H.; Bernal, O. O.
  • Journal of Physics: Condensed Matter, Vol. 16, Issue 40
  • DOI: 10.1088/0953-8984/16/40/005

Electron doping evolution of the magnetic excitations in BaFe 2 x Ni x As 2
journal, October 2013


The Electron-Pairing Mechanism of Iron-Based Superconductors
journal, April 2011


Nematic spin fluid in the tetragonal phase of BaFe 2 As 2
journal, August 2011


Unconventional Superconductivity and Antiferromagnetic Quantum Critical Behavior in the Isovalent-Doped BaFe 2 ( As 1 x P x ) 2
journal, September 2010


Effect of a nonzero temperature on quantum critical points in itinerant fermion systems
journal, September 1993


Magnetic neutron diffraction study of Ba(Fe 1 x Co x ) 2 As 2 critical exponents through the tricritical doping
journal, April 2013


Copper NMR and Thermodynamics of UCu 5 x Pd x : Evidence for Kondo Disorder
journal, September 1995


A common thread: The pairing interaction for unconventional superconductors
journal, October 2012


Superconductivity induced by Ni doping in BaFe 2 As 2 single crystals
journal, February 2009


The puzzle of high temperature superconductivity in layered iron pnictides and chalcogenides
journal, October 2010